What is the first quartile, Q1, of the data set?

Mathematics

1 answer:

Kryger [21]3 years ago

4 0

It is 28 because you have to take the median out then go to the first set of data and find the median of that.

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Someone help me with these 3 problems!!!! Due tomorrow!!!

Neporo4naja [7]

Answer:

3. x $\leq$ -1

5. n $\geq$ 6

7. n $>$ 11

Step-by-step explanation:

3. -7+x $\geq$ -8 5. n-2 $\leq$ 4 7. -18+n-7

+7 +7 +2 +2 +18 +18

x $\leq$ -1 n $\geq$ 6 n $>$ 11

6 0

1 year ago

Susan has been on a bowling team for 14 years. After examining all of her scores over that period of time, she finds that they f

elixir [45]

Answer:

Step-by-step explanation:

Let X be the random variable that represents a score of Susan. We know that X has a normal distribution with average score of 225 and a standard deviation of 13. For n = 16 games, the average score $\bar{X}$ has a normal distribution with mean of 225 and a standard deviation of $13/\sqrt{16}=13/4=3.25$ . Besides, the z-score related to 220 is (220-225)/3.25=-1.5385, and the z-score related to 228 is (228-225)/3.25= 0.9231. Therefore, we are looking the probability $P(220 < \bar{X} < 228) = P(-1.5385 < Z < 0.9231) = P(Z < 0.9231) - P(Z < -1.5385)$ = 0.76